»
Electron Tube Circuits

The voltage amplifiers discussed in Chaps. 5 and 6 are designed to increase a voltage signal from a low level to one which is adequate for operating some low-power circuit. Such amplifiers are generally operated in class A since the amplification is to be accomplished without distortion. Pig. 9-1. The schematic and equivalent circuits of a simple series-fed power amplifier. Pig. 9-1. The schematic and equivalent circuits of a simple series-fed power amplifier. A power amplifier serves to supply...